OCONNOR, MARY ELLEN

Operated by DOLPHIN PETROLEUM, LP (P-5 222226) in the MARY ELLEN OCONNOR (5000) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 5404District 02Field 57911982NGPA filingOilCasinghead gasSaveExport
Value, all time
$1.3 M
Jan 1993 – May 2026
Value, last 12 filed months
$0
at the published price for each month
Months reported
401
no gaps in the span
Streams
2
oil, casinghead gas

The Railroad Commission's own record for the field this lease produces from, including the spacing rule that governs how close together its wells may be drilled.

These are facts about the field, not about this lease. The field holds 7 leases and 13 wells, and the rule below applies to all of them.

Discovered
1977-01-09
as the register files it
Field class
Oil and gas
the register's own label
Between wells
no field rule filed
From a lease line
no field rule filed

Severance-tax incentive filings

Applications the operator filed to have this lease's gas taxed at a reduced state rate. A filing is an application, and this page never calls one a reduction that was granted.

ProgrammeFilingsWith an approval dateDatedDocket
NGPA1none

This says nothing about a royalty. A severance tax is charged to the operator. Whether a reduced rate reaches a royalty owner depends on the wording of the lease instrument, which is a private contract this site does not hold.

What this lease produced, and what it was worth

Oil and condensate are valued on the volume the state records as disposed of; gas and casinghead gas on the volume produced. They are different columns of different files, and the difference is not cosmetic.

StreamBasisVolumeValue
OilDisposition31,612 bbl$1,034,230
Casinghead gasProduction99,228 Mcf$286,008
Total$1,320,238

36,543 Mcf of this lease's gas, across 48 months, carries no value here. No free Texas wellhead gas price exists before 1997, so those months are left out of the total rather than valued at zero. The total above is therefore a floor, not an estimate.

Wells on this lease (4)

Every wellbore the Railroad Commission records against this lease key, with the depth, the last completion and the plug date exactly as filed. A well with no plug date is not stated to be producing — the state files no such flag.

These wells centre on 28.2567, -97.2289. A lease has no coordinate of its own — that point is the mean of its wells, and they span 1.3 miles.

28.25511, -97.23014 · centre of the wells drawn, derived

What these wells add up to

Every figure below is counted over all of this lease's wells, not over the rows listed above. The Railroad Commission files two facts about a well's state — a plug date and a proration-schedule flag — and a well can carry both, so they are published as separate counts and never merged into a status.

On the schedule
100.0%
4 of 4 wells
With a plug date
100.0%
4 of 4 wells
Median depth
6,025 ft
4 wells filed one
Completion to plug
31.9 years
median over 4 wells

What the state filed about each well

On the RRC proration schedule
4100.0%
A plug date is filed
4100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
4100.0%
NeitherNo plug date, and not on the schedule.
00.0%

A plug date is the date the Commission recorded the wellbore as sealed with cement and abandoned. It is the only end-of-life fact Texas files. There is no "active" flag on a well, so this page does not print one — a well with no plug date is not stated to be producing.

How deep they were drilled

Between 5,950 and 6,408 ft, median 6,025 ft, over the 4 wells that filed a depth.

Completions filed
Dec 1986 – Mar 2002
4 of 4 wells
Plug dates filed
Mar 2022 – Nov 2022
4 of 4 wells

Last completion to plug: a median of 31.9 years across the 4 wells that filed both dates, with the middle half between 27.5 years and 34.3 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

4 wells

42-39130009315,950 ftMar 2002Nov 2022Yes
42-39130597476,408 ftJul 1992Apr 2022Yes
42-3910402726 F5,950 ftSep 1988Sep 2022Yes
42-39130576366,100 ftDec 1986Mar 2022Yes

The API number is the state's, prefixed 42 for Texas. A well is matched to this lease by the lease key the Commission files on the wellbore record, so a well that has moved between leases appears under each one it was filed against.

Every month this lease reported (401)

Volume × price = value, one row per cycle. The price columns are the same series published on the prices page — nothing here is modelled.

401 months

May 202600106.413.05$0
Apr 20260098.932.87$0
Mar 20260089.753.15$0
Feb 20260063.503.75$0
Jan 20260059.138.00$0
Dec 20250056.664.41$0
Nov 20250058.593.93$0
Oct 20250059.383.30$0
Sep 20250062.743.08$0
Aug 20250063.933.01$0
Jul 20250066.743.32$0
Jun 20250066.483.13$0
May 20250060.553.23$0
Apr 20250062.363.54$0
Mar 20250067.704.27$0
Feb 20250070.884.34$0
Jan 20250074.324.28$0
Dec 20240068.993.12$0
Nov 20240069.052.20$0
Oct 20240071.372.28$0
Sep 20240069.612.36$0
Aug 20240075.632.06$0
Jul 20240079.932.15$0
Jun 20240078.082.63$0
May 20240078.812.20$0
Apr 20240084.451.66$0
Mar 20240080.301.55$0
Feb 20240076.091.78$0
Jan 20240073.023.30$0
Dec 20230071.262.61$0
Nov 20230077.892.81$0
Oct 20230085.443.09$0
Sep 20230089.042.74$0
Aug 20230080.522.67$0
Jul 20230074.852.64$0
Jun 20230068.962.26$0
May 20230070.622.23$0
Apr 20230078.122.24$0
Mar 20230072.852.39$0
Feb 20230075.112.47$0
Jan 20230076.533.39$0
Dec 20220076.415.73$0
Nov 20220085.005.65$0
Oct 20220087.185.86$0
Sep 20220084.888.16$0
Aug 20220094.529.13$0
Jul 202200101.587.54$0
Jun 202200115.097.98$0
May 202200109.378.43$0
Apr 202200104.226.84$0
Mar 202200108.885.08$0
Feb 20220091.054.86$0
Jan 20220081.844.54$0
Dec 20210071.323.90$0
Nov 20210077.435.24$0
Oct 20210079.795.71$0
Sep 20210069.865.35$0
Aug 20210066.024.22$0
Jul 20210070.783.98$0
Jun 20210069.493.38$0
May 20210063.483.02$0
Apr 20210060.362.76$0
Mar 20210061.302.72$0
Feb 20210057.805.55$0
Jan 20210050.412.81$0
Dec 20200044.642.68$0
Nov 20200038.772.71$0
Oct 20200036.972.48$0
Sep 20200037.091.99$0
Aug 20200039.982.39$0
Jul 20200038.371.83$0
Jun 20200034.901.69$0
May 20200016.921.81$0
Apr 20200014.751.80$0
Mar 20200030.341.86$0
Feb 20200049.881.98$0
Jan 20200057.252.09$0
Dec 20190059.012.30$0
Nov 20190055.302.75$0
Oct 20190053.472.42$0
Sep 20190055.052.66$0
Aug 20190053.112.30$0
Jul 20190056.272.46$0
Jun 20190052.782.49$0
May 20190058.482.74$0
Apr 20190062.632.75$0
Mar 20190056.803.06$0
Feb 20190050.852.79$0
Jan 20190046.033.23$0
Dec 20180046.594.19$0
Nov 20180052.934.24$0
Oct 20180061.443.40$0
Sep 20180059.543.11$0
Aug 20180059.403.07$0
Jul 20180065.142.93$0
Jun 20180060.183.08$0
May 20180065.382.90$0
Apr 20180063.842.90$0
Mar 20180061.222.79$0
Feb 20180061.782.77$0
Jan 20180062.874.01$0
Dec 20170057.272.92$0
Nov 20170055.423.12$0
Oct 20170049.292.98$0
Sep 20170047.523.09$0
Aug 20170045.373.00$0
Jul 20170043.873.09$0
Jun 20170042.493.09$0
May 20170045.373.26$0
Apr 20170047.933.21$0
Mar 20170046.772.98$0
Feb 20170050.452.95$0
Jan 20170049.413.42$0
Dec 20160048.763.72$0
Nov 20160042.492.64$0
Oct 20160046.193.09$0
Sep 20160041.553.10$0
Aug 20160041.442.92$0
Jul 20161910141.622.92$1,086
Jun 2016389645.352.69$1,981
May 20163210242.521.99$1,564
Apr 2016409536.561.99$1,652
Mar 2016208533.011.79$813
Feb 2016209626.472.06$728
Jan 2016209527.352.36$772
Dec 20154214732.362.00$1,653
Nov 20154116438.792.17$1,946
Oct 20152019043.552.43$1,332
Sep 20153921342.992.76$2,264
Aug 20154020140.162.87$2,184
Jul 20154120648.152.95$2,581
Jun 20156031556.152.88$4,277
May 20154022655.212.96$2,876
Apr 2015409349.822.71$2,245
Mar 2015438842.892.93$2,103
Feb 2015439644.662.98$2,206
Jan 20154410543.433.10$2,236
Dec 2014669354.693.59$3,944
Nov 20141068470.464.25$7,826
Oct 2014848178.303.90$6,893
Sep 20146310586.164.05$5,853
Aug 2014638889.394.04$5,987
Jul 2014609296.564.18$6,178
Jun 2014618998.164.74$6,409
May 2014839194.734.73$8,293
Apr 2014628195.944.81$6,338
Mar 2014656395.895.06$6,551
Feb 2014649497.406.19$6,816
Jan 2014439890.404.86$4,364
Dec 20134210291.824.35$4,301
Nov 2013419988.853.74$4,013
Oct 20136114697.423.78$6,494
Sep 201363102104.113.72$6,938
Aug 201340100104.253.52$4,522
Jul 201341101102.523.72$4,579
Jun 2013418994.403.93$4,220
May 20134110394.834.15$4,315
Apr 2013429893.964.28$4,366
Mar 2013429993.623.91$4,319
Feb 2013199991.233.42$2,072
Jan 20134112391.603.42$4,176
Dec 20121810986.773.42$1,935
Nov 20124113386.953.62$4,047
Oct 20124110189.383.40$4,008
Sep 20122011294.672.92$2,220
Aug 20124110992.662.91$4,116
Jul 20122110885.133.02$2,114
Jun 20124115679.822.52$3,666
May 20124212391.612.49$4,154
Apr 201222178101.652.00$2,592
Mar 201222189105.052.22$2,731
Feb 201241135101.102.57$4,492
Jan 20124010798.092.73$4,216
Dec 20114012796.873.24$4,286
Nov 20114312195.723.31$4,517
Oct 20114511484.983.65$4,240
Sep 20114215583.623.99$4,130
Aug 20112111483.404.15$2,224
Jul 2011268594.144.52$2,832
Jun 201107692.904.64$353
May 2011266498.134.40$2,833
Apr 201145130105.964.33$5,332
Mar 20114412896.364.06$4,759
Feb 20112512385.644.18$2,655
Jan 20115412286.504.59$5,231
Dec 20104612185.734.35$4,470
Nov 20103011780.843.80$2,869
Oct 20102512678.103.51$2,395
Sep 20102912772.633.98$2,612
Aug 20104715173.684.42$4,130
Jul 201026072.554.74$1,886
Jun 2010484470.364.91$3,593
May 20104915171.124.24$4,124
Apr 20103916181.694.12$3,850
Mar 20104217478.394.39$4,056
Feb 20102712873.585.44$2,683
Jan 20104315274.365.96$4,104
Dec 20094110271.445.48$3,488
Nov 20092616874.593.75$2,570
Oct 20094617072.544.11$4,036
Sep 20094718865.543.06$3,657
Aug 20094819767.423.22$3,870
Jul 20094518761.133.46$3,399
Jun 20095316966.163.90$4,165
May 20095421154.743.93$3,784
Apr 20095219446.773.59$3,128
Mar 20096418542.144.06$3,448
Feb 20094419732.814.63$2,356
Jan 20094426435.865.37$2,996
Dec 20087429437.105.98$4,503
Nov 20086031955.496.86$5,518
Oct 20087229275.246.92$7,439
Sep 200847287101.767.88$7,043
Aug 200872371114.228.48$11,371
Jul 200845341131.0811.39$9,782
Jun 200873336131.3313.03$13,966
May 200842329123.1711.57$8,981
Apr 200845284110.3110.45$7,933
Mar 200885304101.909.66$11,599
Feb 20085829192.538.77$7,919
Jan 20083028290.388.21$5,025
Dec 20077529088.337.30$8,742
Nov 20074532391.677.29$6,480
Oct 20077229382.856.92$7,993
Sep 20077230375.846.24$7,352
Aug 20074527869.066.39$4,884
Jul 20077430870.906.39$7,214
Jun 20073026062.007.55$3,823
May 200710230958.747.85$8,416
Apr 200711931659.617.81$9,560
Mar 20077425656.927.30$6,081
Feb 200710027455.108.22$7,761
Jan 200711425550.306.73$7,450
Dec 20068625856.656.92$6,657
Nov 200610616854.207.62$7,025
Oct 200610910554.906.01$6,616
Sep 20069234760.085.04$7,275
Aug 20067836668.717.34$8,046
Jul 20068221969.376.34$7,077
Jun 20068318866.286.38$6,701
May 20068119266.016.42$6,580
Apr 20069822064.397.36$7,930
Mar 20067621556.707.08$5,832
Feb 20068117857.597.75$6,044
Jan 20069322960.598.93$7,681
Dec 200511220654.9413.42$8,917
Nov 20059120654.6910.59$7,158
Oct 20058919258.3413.80$7,841
Sep 20058943161.4512.08$10,675
Aug 20058244161.519.80$9,364
Jul 200510445855.697.84$9,384
Jun 200510754452.337.38$9,615
May 200514444145.226.65$9,445
Apr 2005862,61949.207.36$23,508
Mar 20051041,94850.377.15$19,176
Feb 200533045.226.31$1,492
Jan 20050043.166.32$0
Dec 20040039.866.75$0
Nov 20040045.286.33$0
Oct 20040049.706.52$0
Sep 20040043.245.28$0
Aug 20047216142.375.55$3,944
Jul 200411413438.286.08$5,179
Jun 200411716736.106.43$5,298
May 200412212237.486.49$5,365
Apr 20041137834.475.86$4,352
Mar 200414512534.365.53$5,673
Feb 200413512132.455.51$5,047
Jan 20041255232.036.30$4,331
Dec 20031506230.266.30$4,930
Nov 2003837828.804.60$2,749
Oct 20031718628.174.76$5,226
Sep 20031348526.314.75$3,929
Aug 200315411529.765.13$5,173
Jul 200313310129.415.17$4,434
Jun 200317536228.565.98$7,164
May 200315911826.595.97$4,933
Apr 20031448026.675.41$4,273
Mar 200312633631.146.10$5,972
Feb 200314030333.487.93$7,089
Jan 200319037230.315.58$7,835
Dec 200219418626.914.85$6,123
Nov 200215415224.664.14$4,426
Oct 200217017126.464.23$5,221
Sep 200216121627.443.64$5,203
Aug 200215721825.963.16$4,766
Jul 200216734724.583.06$5,167
Jun 200213018723.733.34$3,709
May 200212817024.663.58$3,766
Apr 200218013223.653.51$4,721
Mar 200214223822.003.10$3,862
Feb 200211621018.222.38$2,612
Jan 200214918917.172.38$3,007
Dec 200115316616.932.36$2,983
Nov 200113419218.072.41$2,883
Oct 200112720919.782.53$3,041
Sep 200114818224.262.25$4,000
Aug 200115726524.873.05$4,714
Jul 200115726423.933.20$4,601
Jun 200114524024.563.82$4,479
May 200121728525.524.31$6,765
Apr 200117227324.685.34$5,702
Mar 200118628624.545.38$6,102
Feb 200117025027.755.77$6,159
Jan 200118632827.478.40$7,864
Dec 200018233026.889.12$7,903
Nov 200019125632.215.66$7,601
Oct 200019124131.235.15$7,205
Sep 200017431431.875.19$7,174
Aug 200020031229.644.54$7,345
Jul 200017727928.534.09$6,191
Jun 200018926929.304.40$6,721
May 200018928227.263.68$6,190
Apr 200017326624.513.12$5,069
Mar 200018017028.422.86$5,602
Feb 200017419227.622.73$5,329
Jan 200019918825.272.48$5,495
Dec 199917519924.282.42$4,731
Nov 199918618723.192.43$4,769
Oct 199918921920.982.80$4,579
Sep 199916721521.752.62$4,195
Aug 199917230919.262.88$4,201
Jul 199916426117.892.37$3,553
Jun 199916722715.942.36$3,198
May 199919033715.792.32$3,782
Apr 199912826215.102.21$2,511
Mar 199916265612.471.84$3,226
Feb 19991496949.981.82$2,749
Jan 199916373110.381.90$3,081
Dec 19981555659.201.77$2,428
Nov 199816370710.892.19$3,320
Oct 199815058712.421.97$3,019
Sep 199815357512.592.08$3,124
Aug 199814560311.301.91$2,789
Jul 199816364111.742.24$3,348
Jun 199812564311.242.24$2,844
May 199817970212.622.21$3,808
Apr 199816967913.042.51$3,905
Mar 199818977112.802.31$4,200
Feb 199816062913.952.30$3,678
Jan 199818274514.702.15$4,281
Dec 199718087416.322.41$5,045
Nov 199718083418.193.09$5,850
Oct 199717475719.253.15$5,734
Sep 199719087917.742.95$5,968
Aug 199716489517.862.55$5,216
Jul 199719673217.582.25$5,090
Jun 199718977617.242.26$5,010
May 199722097218.972.31$6,417
Apr 199718884917.882.08$5,130
Mar 199720087418.951.94$5,485
Feb 199721177020.492.21$6,022
Jan 199729481323.483.54$9,781
Dec 199630584923.32$7,113
Nov 199619683921.97$4,306
Oct 199619382323.31$4,499
Sep 199617878622.22$3,955
Aug 199616795920.26$3,383
Jul 19961821,03919.55$3,558
Jun 199613036718.73$2,435
May 199617593219.43$3,400
Apr 199616670321.51$3,571
Mar 199616495519.38$3,178
Feb 19961501,06116.98$2,547
Jan 199621477417.07$3,653
Dec 199518463217.19$3,163
Nov 199517558916.00$2,800
Oct 199518959615.43$2,916
Sep 19959128816.18$1,472
Aug 19956256515.92$987
Jul 199518657015.24$2,835
Jun 199518455316.41$3,019
May 199517555817.56$3,073
Apr 199515454017.73$2,730
Mar 199519459716.44$3,189
Feb 199522254016.58$3,681
Jan 199525256815.92$4,012
Dec 199420857515.03$3,126
Nov 199422555015.90$3,578
Oct 199420057915.58$3,116
Sep 199417954715.29$2,737
Aug 199420730916.13$3,339
Jul 199420060717.56$3,512
Jun 199418956517.09$3,230
May 199420690815.88$3,271
Apr 199420472314.14$2,885
Mar 199417976012.46$2,230
Feb 199415868712.50$1,975
Jan 199418177312.66$2,291
Dec 199320178312.33$2,478
Nov 199320071614.49$2,898
Oct 199321474115.85$3,392
Sep 199320071315.03$3,006
Aug 199324796915.66$3,868
Jul 199320098715.46$3,092
Jun 19931651,00016.79$2,770
May 19931951,23217.68$3,448
Apr 19932481,27018.05$4,476
Mar 19931981,32618.14$3,592
Feb 19931361,15117.90$2,434
Jan 19931691,38916.93$2,861

How to read this page

The arithmetic is one multiplication per stream per month. Here it is, worked, on a real row from the table above.

Jul 2016 — as filed, then multipliedworked
Oil                   19 bbl  × $ 41.62 =       $791
Casinghead gas       101 Mcf  × $  2.92 =       $295

────────────────────────────────────────────────────
Month total                                   $1,086

The volumes are the state's, unchanged

Every barrel and every Mcf on this page is a number the Railroad Commission of Texas published in its monthly production query. Nothing is modelled, estimated or filled in.

The dollars are a multiplication, not a valuation

Volume × a published monthly price. It is not what the operator was paid: it takes no account of a contract, a differential, a transportation deduction, or the share any one owner holds.

Oil and gas are priced differently

Oil is a Texas realisation — the crude oil first purchase price. Gas is a benchmark, because no free Texas wellhead gas series exists at any date. The prices page publishes the difference rather than correcting it away.

A lease is not a well

The state reports oil on lease and gas on well, and this page is the lease grain. 02/O/5404 is the state's own key, not one this site invented.